Run results for: Array initialization: preallocate vs push

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Mobile Safari/537.36 OPR/85.0.0.0

Browser: Opera Mobile 85

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

Preallocate

23K/s

Push

8K/s

View exact numbers

Test name	Executions per second
✓ Preallocate	22,871 Ops/sec
Push	8,190 Ops/sec

Tests:

Preallocate
var N = 10000; var result = new Array(N); for (var i = 0; i < N; i++) { result[i] = N; }
Push
var N = 10000; var result = []; for (var i = 0; i < N; i++) { result.push(N); }